Stacked Dielectric Panel Antenna for Compact Directional Transmission
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Solution Overview
Problem
Current directional antennas in wireless communication systems are large, expensive, and difficult to integrate, failing to provide a balance between size, cost, and directional transmission efficiency.
Innovation Solution
A directional antenna design utilizing multiple layers of dielectric panels, including conventional printed circuit board material, to shape and direct signal fields, achieving reduced size and lower costs while maintaining high gain and front-to-back ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional directional antenna designs are used, then directional transmission capability is achieved, but the antenna size becomes excessively large
Solution Approach 1:
The patent transitions from conventional planar antenna structures to a three-dimensional stacked configuration of dielectric layers. Multiple dielectric layers are stacked vertically with radiating elements positioned at different heights, creating a volumetric structure that achieves directional transmission in a compact footprint. This vertical stacking approach resolves the contradiction by utilizing the third dimension (height) to provide directional capability without increasing horizontal area.
Solution Approach 2:
The patent employs composite structures combining multiple dielectric materials with different permittivity values in a stacked configuration. Each dielectric layer has optimized properties that contribute to the overall directional performance. The composite dielectric structure enables compact antenna design while maintaining high front-to-back ratio, resolving the contradiction between size and directional capability.
2Ease of operation
If conventional directional antenna designs are used, then directional transmission capability is achieved, but manufacturing cost increases
Solution Approach 1:
The antenna is divided into multiple discrete dielectric layers that can be manufactured separately using standard PCB fabrication processes. Each layer can be produced independently using conventional techniques, then stacked and assembled. This segmentation enables cost-effective manufacturing while achieving directional transmission, as each layer is a simple structure that can be mass-produced.
Solution Approach 2:
The dielectric layers serve multiple functions simultaneously: they provide mechanical support, electrical insulation, and electromagnetic field shaping for directional transmission. The same stacked dielectric structure that provides structural integrity also creates the phase distribution necessary for directionality, eliminating the need for separate components and reducing manufacturing complexity and cost.
3Ease of operation
If conventional directional antenna designs are used, then directional transmission capability is achieved, but integration difficulty increases
Solution Approach 1:
The patent merges the radiating elements, dielectric structures, and grounding planes into a single integrated stacked assembly. The multiple dielectric layers are bonded together to form one unified structure that provides both mechanical support and electromagnetic functionality. This integration simplifies assembly and reduces the number of separate components that need to be managed during system integration.
Solution Approach 2:
By stacking dielectric layers vertically, the patent consolidates multiple functional elements into a compact vertical arrangement. This vertical integration approach reduces horizontal space requirements and simplifies the overall system layout, making integration into wireless devices more straightforward despite the sophisticated directional transmission capability.
4Volume of moving object
If antenna size is reduced, then portability and integration improve, but directional transmission effectiveness deteriorates
Solution Approach 1:
The patent achieves directional transmission in a compact size by exploiting the vertical dimension through stacked dielectric layers. The phase distribution and field shaping are accomplished through the vertical stacking configuration rather than large horizontal dimensions. This allows the antenna to maintain high front-to-back ratio while occupying minimal planar space, resolving the contradiction between size and directional effectiveness.
Solution Approach 2:
The use of composite dielectric structures with optimized permittivity values enables compact antenna design that maintains directional performance. The layered composite structure creates the necessary electromagnetic phase relationships for directionality without requiring large physical dimensions, thus achieving both compact size and effective directional transmission.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The antenna achieves a high gain of approximately 6 dBi and a front-to-back ratio of up to 18-20 dB, with a smaller size and lower manufacturing costs, addressing the limitations of existing antennas.
Implementation Method 1
The invention in the present application capitalizes on the phenomenon that an electromagnetic wave travels through dielectric material much slower than it travels through air
Data Source
AI summary
A directional antenna has a body made of a stack of layers of dielectric panels. A radiating plate is recessed in the top panel of the stack. A grounding plate is attached to the bottom panel of the stack. A feed wire attaches to the radiating plate to feed a signal to the radiating plate. A grounding conductor attaches to the grounding plate for ground. In at least one embodiment the internal feed wire of a coaxial connector provides the feed wire and the external chassis of the coaxial connector provides the grounding conductor.